SVNBot is a program written in PHP that constantly runs in the background (or foreground, if desired) and monitors your SVN repository (or part of it). When it notices the repository has changed, it notifies everyone on its jabber contact list providing a quick overview of what has been changed (in a format similar to the 'svn log -v' command).
gc-utils is a small set of scripts that let you import and update CVS repositories into git very easy and let you export patches back into a CVS working copy. To makes the exchange easy, gc-utils stores the CVS working copy into a subdirectory and receives all information from there whenever necessary.
Submin provides a Web-based admin interface to your Subversion and Git repositories. Its features include user/group management, path permission management, the ability to create svn repositories and managing commit email messages. For Subversion, authentication is done with htpasswd/svn authz, so it can use the same login information as apache2/svn (and trac). For Git, ssh is used, and the login information is synched whenever a change is made. The Web interface can also work with NGINX/uWSGI, but the Subversion part only works with Apache.
The mr command (short for Multiple Repository) can checkout, update, or perform other actions on a set of repositories as if they were one combined respository. It supports any combination of subversion, git, cvs, mecurial, bzr, and darcs repositories. Support for other revision control systems can be added easily.
Releaser is a set of scripts to automate and manage the tasks related to software package releases. It is designed to be modular and to make it easy to both select a particular set of actions associated with releases of a particular project (such as changelog generation, uploading of tarballs, posting announcements to mailing lists), and create new actions that integrate seamlessly into the process. Its status is still somewhat experimental, but the most basic functionality is there.